mullioned-and-transomed

In medieval and later architecture, large windows can be divided into smaller areas of glazing by vertical stone bars (mullions) and horizontal ones (transoms).

'Mackintosh Architecture' led by The Hunterian, University of Glasgow, funded by the Arts and Humanities Research Council; with additional support from The Monument Trust, The Pilgrim Trust, and the Paul Mellon Centre for Studies in British Art; and collaborative input from Historic Scotland and the Royal Commission on the Ancient and Historical Monuments of Scotland.